1 files changed, 131 insertions, 0 deletions
diff --git a/hw/kdrive/linux/ps2.c b/hw/kdrive/linux/ps2.c
new file mode 100644
index 000000000..efb541430
--- /dev/null
+++ b/hw/kdrive/linux/ps2.c
@@ -0,0 +1,131 @@
+/*
+ * $Id$
+ *
+ * Copyright © 1999 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define NEED_EVENTS
+#include "X.h"
+#include "Xproto.h"
+#include "inputstr.h"
+#include "scrnintstr.h"
+#include "kdrive.h"
+#include "Xpoll.h"
+
+int
+Ps2ReadBytes (int fd, char *buf, int len, int min)
+{
+    int		    n, tot;
+    fd_set	    set;
+    struct timeval  tv;
+
+    tot = 0;
+    while (len)
+    {
+	n = read (fd, buf, len);
+	if (n > 0)
+	{
+	    tot += n;
+	    buf += n;
+	    len -= n;
+	}
+	if (tot % min == 0)
+	    break;
+	FD_ZERO (&set);
+	FD_SET (fd, &set);
+	tv.tv_sec = 0;
+	tv.tv_usec = 100 * 1000;
+	n = select (fd + 1, &set, 0, 0, &tv);
+	if (n <= 0)
+	    break;
+    }
+    return tot;
+}
+
+void
+Ps2Read (int ps2Port)
+{
+    unsigned char   buf[3 * 200];
+    unsigned char   *b;
+    int		    n;
+    int		    dx, dy;
+    unsigned long   flags;
+
+    while ((n = Ps2ReadBytes (ps2Port, buf, sizeof (buf), 3)) > 0)
+    {
+	b = buf;
+	while (n >= 3)
+	{
+	    flags = KD_MOUSE_DELTA;
+	    if (b[0] & 4)
+		flags |= KD_BUTTON_2;
+	    if (b[0] & 2)
+		flags |= KD_BUTTON_3;
+	    if (b[0] & 1)
+		flags |= KD_BUTTON_1;
+	    
+	    dx = b[1];
+	    if (b[0] & 0x10)
+		dx -= 256;
+	    dy = b[2];
+	    if (b[0] & 0x20)
+		dy -= 256;
+	    dy = -dy;
+	    n -= 3;
+	    b += 3;
+	    KdEnqueueMouseEvent (flags, dx, dy);
+	}
+    }
+}
+
+char	*Ps2Names[] = {
+    "/dev/psaux",
+    "/dev/mouse",
+};
+
+#define NUM_PS2_NAMES	(sizeof (Ps2Names) / sizeof (Ps2Names[0]))
+
+int
+Ps2Init (void)
+{
+    int	    i;
+    int	    ps2Port;
+
+    for (i = 0; i < NUM_PS2_NAMES; i++)
+    {
+	ps2Port = open (Ps2Names[i], 0);
+	if (ps2Port >= 0)
+	    return ps2Port;
+    }
+}
+
+void
+Ps2Fini (int ps2Port)
+{
+    if (ps2Port >= 0)
+	close (ps2Port);
+}
+
+KdMouseFuncs Ps2MouseFuncs = {
+    Ps2Init,
+    Ps2Read,
+    Ps2Fini
+};